code: def tangent_sphere_to_simplex_is_tangent_test_data(self):
      return self.generate_random_data()
  
imports: import geomstats.backend
  from geomstats.test.data import TestData
  from ...test_geometry.data.base import LevelSetTestData
  from ...test_geometry.data.riemannian_metric import RiemannianMetricTestData
  from .base import InformationManifoldMixinTestData
label_desc: Use image node_id 10 for calling the MultinomialMetricTestData obj's underlying member method code with example usage: obj.tangent_sphere_to_simplex_is_tangent_test_data() and returns: self